Final answer:
Option A). The minimum depth of the tire tread recommended for motorcycle tires is 2.5 mm.
Step-by-step explanation:
The minimum depth of the tire tread recommended for motorcycle tires is 2.5 mm (option A).
Having sufficient tread depth is important for the safety and performance of motorcycle tires. A deeper tread helps maintain traction on wet roads, improving braking and handling. It also helps to prevent hydroplaning, where the tires lose contact with the road surface.
Regularly checking and replacing tires when the tread depth reaches the minimum recommended is crucial to ensure safe riding conditions. Hence, it is always advisable to regularly check the tire tread depth as part of routine motorcycle maintenance and replace the tires if they are worn out beyond this limit.